Abstract: Certain example embodiments relate to techniques for managing the interprocess communication between at least one database client process and at least one database server process in a database system. The at least one database client process sends at least one request to the at least one database server process, with the at least one request comprising one or more buffers. The one or more buffers are transferred, in a single step, from the at least one database client process to a buffer area. The one or more buffers are transferred, in a single step, from the buffer area to the at least one database client process. The buffer area is directly accessible by the at least one database server process.

Abstract: An interface unit adapted for connecting at least one database to at least one of a plurality of high availability cluster servers (HA cluster servers), wherein each database is adapted to execute a set of database-specific commands and wherein each HA cluster server is adapted to output a set of HA cluster server-specific commands. The interface unit may comprise a first interface layer adapted for receiving each of the set of HA cluster server-specific commands outputted by the HA cluster servers; and a second interface layer adapted for sending each of the set of database-specific commands to the respective databases. The interface unit may be further adapted to map each of the HA cluster server-specific commands to at least one of the database-specific commands.

Abstract: A method for transferring metadata including: separating, using a processor, objects in a metadata registry into system-defined objects and user-defined objects, identifying, using the processor, a consistent set of the user-defined objects to export based on relationships of the user-defined objects with other objects, and exporting, using the processor, the consistent set of user-defined objects. A method for transferring metadata may also include: receiving, using a processor, a consistent set of user-defined objects for import into a metadata registry; and importing, using the processor, the set of user-defined objects into the metadata registry, the importing comprising validating the consistency of the set of user-defined objects.

Abstract: An electrical switching device, especially a high-voltage circuit breaker, contains arcing contacts and nominal current contacts. At least one of the nominal current contacts has a surface formed of an arc-resistant material provided with a galvanic coating. In this configuration, the contact points can withstand high mechanical and thermal loads and at the same time maintain a high current carrying capacity.

Abstract: The present invention concerns a method for managing the interprocess communication between at least one database client process (2) and at least one database server process (3) in a database system (5), wherein the at least one database client process (2) sends at least one request to the at least one database server process (3), the at least one request comprising one or more buffers, the method comprising the steps of: a. transferring (211), in a single step, the one or more buffers from the at least one database client process (2) to a buffer area (40); and b. transferring (223), in a single step, the one or more buffers from the buffer area (40) to the at least one database client process (2); wherein c. the buffer area (40) is directly accessible by the at least one database server process (3).

Abstract: An interface unit adapted for connecting at least one database to at least one of a plurality of high availability cluster servers (HA cluster servers), wherein each database is adapted to execute a set of database-specific commands and wherein each HA cluster server is adapted to output a set of HA cluster server-specific commands. The interface unit may comprise a first interface layer adapted for receiving each of the set of HA cluster server-specific commands outputted by the HA cluster servers; and a second interface layer adapted for sending each of the set of database-specific commands to the respective databases. The interface unit may be further adapted to map each of the HA cluster server-specific commands to at least one of the database-specific commands.

Abstract: An electrical switching device, especially a high-voltage circuit breaker, contains arcing contacts and nominal current contacts. At least one of the nominal current contacts has a surface formed of an arc-resistant material provided with a galvanic coating. In this configuration, the contact points can withstand high mechanical and thermal loads and at the same time maintain a high current carrying capacity.

Abstract: A magnetic linear drive has a coil in whose interior the current can produce a magnetic flux in an axial directions, having an armature which can move only at right angles to the axial direction and which has a magnetically active part which is magnetized, in particular, parallel to, but in the opposite direction to, the axial direction. The armature is driven by a current surge which accelerates the magnetically active part toward the coil center irrespective of its initial position.

Abstract: A high-voltage circuit breaker that has a grounded enclosure and an interrupter module arranged in the grounded enclosure. The interrupter module has short pipe connections and bushings mounted on them to accommodate connecting leads. The current converters are arranged on the bushings. The insulation body of the bushing passes through the current converters along their entire length with respect to the longitudinal direction of the respective connecting lead.

Abstract: A method of manufacturing a wound insulator pipe, in particular for a high voltage insulator, having one or more ducts for conductors of any kind is provided. A laminate structure is achieved by winding a material onto a spindle and impregnating with a resin. Initially first layers of the material to be wound are applied; then at least one groove is made in the surface obtained and then the winding is completed until the final diameter is attained.

Abstract: A method for producing a wound insulating conduit, in particular for a high-voltage insulator, with at least one empty channel for subsequent insertion of a conductor, e.g., an optical fiber. First layers of a material to be wound are applied first, then a molded body provided with at least one empty conduit is applied to a resulting surface and wrapped by additional layers. The molded body has lateral projections which extend over an entire length of the empty conduit and are designed so that they correspond to the surface to which it is secured.

Abstract: A drive for an electric high voltage circuit-breaker has a revolving crank that is driven by an energy storage mechanism, such as a spring, between an upper dead center and a bottom dead center and a backstop that prevents the crank from moving backwards against the driving direction after it moves beyond the bottom dead center. The backstop is provided with a friction clutch with a first ring that is firmly coupled to the crank and the driving shaft and that can rotate in relation to a second return stop ring when a releasing force is exceeded.

Abstract: In an electric high-voltage circuit breaker with a hydraulic drive, the piston rod, going through a seal, is brought out of the hydraulic cylinder in order to actuate the movable contact via a reversing gear and a switching rod. The piston rod is arranged in a protective tube and provided with a guiding ring which guides the piston rod in the protective tube. The piston rod is coupled to a fork head which engages the reversing gear. The hydraulic cylinder is located between two housings for drive parts, the interior spaces of which are heated and ventilated or exhausted. To prevent the formation of condensate water in the interior of the protective tube, there are provided in the hydraulic cylinder passages which connect the interior of the lower housing and the interior of the upper housing, respectively, to the interior of the protective tube. Thereby, the heated air is conducted from the lower housing via the interior of the protective tube into the interior of the upper housing.

Abstract: An improved reversing valve for use in hydraulic actuators of electric high-voltage circuit breakers wherein the valve is of the type comprising: a ball for controlling the path to be reversed; means for continuously subjecting the ball to a pressure force; a movable plunger for loading the ball; a valve body for controlling the path to be reversed connected to the plunger; and a hydraulically movable piston connected to the plunger. The improvement comprises placement of the ball in a first stable end position by the continuous pressure force and the further inclusion in the valve of a roller toggle means responsive to the loading of the ball by the plunger for causing the continuous pressure on the ball to be reduced and the ball to be placed in a second stable condition.